cloudflare / worker-emscripten-template Goto Github PK

installed via npm i @cloudflare/wrangler -g
running node 10.1.0

Running as admin on windows 10 but getting this

λ wrangler generate myapp https://github.com/ashleygwilliams/worker-emscripten-template
⬇️ Installing cargo-generate...
  Generating a new webpack worker project with name 'myapp'...
 Creating project called `myapp`...
Error: liquid: Cannot read file
  with:
    path=C:\Repos\tests\myapp\src\stb\data\atari_8bit_font_revised.png

Error: failed to execute `"cmd" "/C" "C:\\Users\\miked\\AppData\\Local\\.wrangler\\cargo-generate-365221054903e5ed\\cargo-generate.exe" "generate" "--git" "https://github.com/ashleygwilliams/worker-emscripten-template" "--name" "myapp" "--force"`: exited with exit code: 1

If after installing the template and running it, one tries to execute curl http://localhost:8787/600*400.jpg?width=100 as suggested, the response is an error page due to timeout in some service.

cargo-generate fails to generate a project using this template because liquid is trying to do variable replacement/substitution within the source:

src/workers » wrangler generate my-emscripten-resizer https://github.com/cloudflare/worker-emscripten-template
⬇️ Installing cargo-generate...
🌀  🐑  Generating a new webpack worker project with name 'my-emscripten-resizer'... 🌀
🔧   Creating project called `my-emscripten-resizer`...
Error: liquid:    --> 288:32
    |
288 |             sprintf(temp, "{%d,%d}", d ? data[i] : (trims[i]>>8), trims[i]&255);␊
    |                                ^---
    |
    = expected Value, Range, ">", "<", "=", ",", ":", "==", "!=", "<>", ">=", or "<="

Error: failed to execute `"/Users/kristian/Library/Caches/.wrangler/cargo-generate-c45c3b5989732284/cargo-generate" "generate" "--git" "https://github.com/cloudflare/worker-emscripten-template" "--name" "my-emscripten-resizer" "--force"`: exited with exit code: 1

trzeci/emscripten will be deprecated in favor of an official Emscripten Docker image.

https://hub.docker.com/r/trzeci/emscripten/
https://hub.docker.com/r/emscripten/emsdk

Trying to get it to work, and despite looking into several fixes in the issues section, it seems this is more or less entirely unmaintained for at least a year now

This is due to requiring the emscripten glue code in the worker, when the emscripten glue code is also built as part of the webpack build.

I'm sporadically getting the following error:

Uncaught (in promise)
RuntimeError: memory access out of bounds
    at _malloc (<anonymous>:wasm-function[68]:0x1fbd6)
    at _init (<anonymous>:wasm-function[15]:0x3408)
    at Object.e._init [as init] (worker.js:1:7350)
    at worker.js:1:11030
Uncaught (in response)
Error: internal error

I haven't enabled logging on prod, but i believe the following Error 1101 Ray ID: ... Worker threw exception is likely caused by the above

In Wrangler release 1.14.0 the global wasm binding was changed to WASM_MODULE (see #1730). The template no longer works out of the box if used with this version or newer.

Since the Emscripten process changes something, or there is something else going on, the compiler.hooks.compilation.tap('emscripten-build', compilation => {
just restarts immediately after the build if unchecked.

Hi,

After using the command line: wrangler generate resize https://github.com/ashleygwilliams/worker-emscripten-template

Error: liquid: --> 288:32
|
288 | sprintf(temp, "{%d,%d}", d ? data[i] : (trims[i]>>8), trims[i]&255);␊
| ^---
|
= expected Value, Range, ">", "<", "=", ",", ":", "==", "!=", "<>", ">=", or "<="

Error: ErrorMessage { msg: "failed to execute \"/Users/szelee/.cargo/bin/cargo-generate\" \"generate\" \"--git\" \"https://github.com/ashleygwilliams/worker-emscripten-template\" \"--name\" \"resize\" \"--force\": exited with exit code: 1" }

@page "/drawing"
@using SkiaSharp
@using SkiaSharp.Views.Blazor
@rendermode InteractiveWebAssembly
@inject HttpClient http
<h3>Drawing</h3>
<button class="btn btn-primary m-1" @onclick="OnClickImg" type="button">更新绘图</button>

<SKCanvasView id="test" OnPaintSurface="OnPaintSurface" style="width:480px; height:240px" @ref="canvasView" @onclick="OnClickImg" />
@code {

    private SKCanvasView canvasView;
    private void OnClickImg()
    {
        //引发画布更新绘图
        canvasView.Invalidate();
    }

    async void OnPaintSurface(SKPaintSurfaceEventArgs e)
    {
        var canvas = e.Surface.Canvas;

        canvas.Clear(SKColors.SkyBlue);

        try
        {
            var imageStream = await http.GetStreamAsync("http://localhost:5158/2.BMP");
            byte[] buffers = new byte[imageStream.Length];
            imageStream.Read(buffers, 0, buffers.Length);

            SKBitmap bitmap = SKBitmap.Decode(buffers);
            canvas.DrawBitmap(bitmap, 1, 1);
        }
        catch (Exception ex)
        {

        }

    }
}

MONO_WASM: Exception marshalling result of JS promise to CS: RuntimeError: memory access out of bounds
at SkCanvas::drawImage(SkImage const*, float, float, SkPaint const*) (wasm://wasm/0585664e:wasm-function[8982]:0x368e95)
at sk_canvas_draw_image (wasm://wasm/0585664e:wasm-function[13141]:0x4da50f)
at wasm_invoke_viiffi (wasm://wasm/0585664e:wasm-function[29423]:0x7d95f4)
at ves_pinvoke_method (wasm://wasm/0585664e:wasm-function[14435]:0x529b84)
at mono_interp_exec_method (wasm://wasm/0585664e:wasm-function[14426]:0x51b931)
at interp_runtime_invoke (wasm://wasm/0585664e:wasm-function[14466]:0x52b1e6)
at mono_jit_runtime_invoke (wasm://wasm/0585664e:wasm-function[19000]:0x640276)
at do_runtime_invoke (wasm://wasm/0585664e:wasm-function[17847]:0x600b5a)
at mono_runtime_try_invoke (wasm://wasm/0585664e:wasm-function[17856]:0x6015da)
at mono_runtime_invoke (wasm://wasm/0585664e:wasm-function[17892]:0x604157) {stack: 'RuntimeError: memory access out of bounds
…/wasm/0585664e:wasm-function[17892]:0x604157)', message: 'memory access out of bounds'}

I believe the two changes necessary are:

1. Add this line to wrangler.toml:

webpack_config = "webpack.config.js"

2. Change this line in index.js:

-      let instance = new WebAssembly.Instance(wasmprogram, info)
+      let instance = new WebAssembly.Instance(wasm, info)